Home / 13,957.20-20,960.10-13,519.80

Finding the Fourth Proportional to 13,957.20, 20,960.10 and 13,519.80

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Solution

The fourth proportional to 13,957.20, 20,960.10 and 13,519.80 is: 20,303.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,957.20 : 20,960.10 = 13,519.80 : x
  2. Step 2: Convert to fraction form
    13,957.20/20,960.10 = 13,519.80/x
  3. Step 3: Cross multiply
    13,957.20x = 20,960.10 × 13,519.80
  4. Step 4: Simplify right side
    13,957.20x = 283,376,359.98
  5. Step 5: Solve for x
    x = 283,376,359.98/13,957.20
  6. Step 6: Final answer
    x = 20,303.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.